反应详情

Compound 94-1 (140 mg) was dissolved in methylene chloride (10 ml), triphenylphosphine (212 mg) and N-bromosuccinimide (144 g) were added under ice-cooling, and the mixture was stirred under ice-cooling for 2 hr, and at room temperature 16 hr. The reaction mixture was washed with water and saturated brine, and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure. Diethyl ether (50 ml) was added, and the precipitated triphenylphosphine oxide was filtered off. The concentrate of the filtrate was purified by silica gel column chromatography to give the object product (190 mg) as a colorless oil.

1. temperaturecooling
2. temperaturecooling for 2 hr
3. customat room temperature
4. custom16 hr
5. washThe reaction mixture was washed with water and saturated brine
6. dry with materialdried over anhydrous magnesium sulfate
7. customThe solvent was evaporated under reduced pressure
8. additionDiethyl ether (50 ml) was added
9. filtrationthe precipitated triphenylphosphine oxide was filtered off
10. concentrationThe concentrate of the filtrate
11. customwas purified by silica gel column chromatography